Article Figures & Data
Figures
- fig 1.
EPID versus LSDI in a healthy volunteer.
A and B, EPID (2000/90/1; b = 600 s/mm2) trace images at two anatomic levels show geometric distortion of the brain stem and artifactual high signal intensity in the temporal lobes and anterior frontal lobes.
C and D, LSDI (2736/89/1; b = 600 s/mm2) trace images at corresponding levels show less geometric distortion and less magnetic-susceptibility artifact.
- fig 2.
EPID versus LSDI in a volunteer with a paper clip taped to the forehead.
A, EPID (2000/90/1; b = 600 s/mm2) trace image shows marked signal loss due to magnetic-susceptibility effect in the anterior two thirds of the brain.
B, LSDI (2736/89/1; b = 600 s/mm2) trace image at the same level shows less artifactual signal loss with preservation of much of the anatomic detail.
- fig 3.
Case 1: Neonate with hypoplastic left heart and seizures due to embolic infarction.
A, Three hyperintense lesions (arrows) are evident on the T2-weighted (3200/85/1) image.
B, The lesions are more conspicuous on the LSDI (2736/89/1; b = 600 s/mm2) trace image.
C, The lesions have decreased ADCs, as shown by low intensity on the diffusion map.
- fig 4.
Case 8: 11 year-old boy with new left hemiparesis due to emboli from a vertebral artery dissection.
A–C, A left thalamocapsular lesion is evident on the T2-weighted (3200/85/1) image (arrow, A). The lesion is more conspicuous on the LSDI (2736/89/1; b = 600 s/mm2) trace image (arrow, B), and has a decreased ADC on the diffusion map (C), indicating an acute infarction.
- fig 5.
Case 5: 2-year-old girl with left-sided body seizures due to encephalitis.
A–C, A minimally hyperintense lesion is present in the right thalamus on the T2-weighted (3200/85/1) image (arrow, A). The lesion is nearly isointense on the LSDI (2736/89/1; b = 600 s/mm2) trace image (B), and has a slightly increased ADC on the ADC map (arrow, C), as indicated by mildly increased signal. The increased ADC confirms that this is not an acute infarction.
Tables
Clinical data and MR findings in 12 children studied with line scan diffusion imaging (LSDI)
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